Aztec Protocol

# Aztec Protocol Documentation > Build private smart contracts on Ethereum's leading privacy-first L2 zkRollup. For the complete documentation as a single file, see [llms-full.txt](https://docs.aztec.network/llms-full.txt). **Setting up an AI agent?** Read the [AI Tooling guide](https://docs.aztec.network/developers/ai_tooling) first for recommended CLAUDE.md/AGENTS.md instructions and common-mistake guidance (use the `aztec` CLI, not `nargo` or `bb` directly). - [Aztec Protocol Documentation](/index.md) ## developers - [AI Tooling](/developers/testnet/ai_tooling.md): Set up AI coding tools like Claude Code, Cursor, and Codex for Aztec and Noir development. - [Aztec.js](/developers/testnet/docs/aztec-js.md): Complete guide to Aztec.js library for managing accounts and interacting with contracts on the Aztec network, including installation, importing, and core workflow functions. - [Reference](/developers/testnet/docs/aztec-js/aztec_js_reference.md): Comprehensive auto-generated reference for the Aztec.js TypeScript library with all classes, interfaces, types, and functions. - [Connect to Local Network](/developers/testnet/docs/aztec-js/how_to_connect_to_local_network.md): Connect your application to the Aztec local network and interact with accounts. - [Creating Accounts](/developers/testnet/docs/aztec-js/how_to_create_account.md): Step-by-step guide to creating and deploying new user accounts in Aztec.js applications. - [Deploying Contracts](/developers/testnet/docs/aztec-js/how_to_deploy_contract.md): Deploy smart contracts to Aztec using generated TypeScript classes. - [Paying Fees](/developers/testnet/docs/aztec-js/how_to_pay_fees.md): Pay transaction fees on Aztec, understand mana costs, estimate gas, and retrieve fees from receipts. - [Reading Contract Data](/developers/testnet/docs/aztec-js/how_to_read_data.md): How to read data from contracts including simulating functions, reading logs, and retrieving events. - [Sending Transactions](/developers/testnet/docs/aztec-js/how_to_send_transaction.md): Send transactions to Aztec contracts using Aztec.js with various options and error handling - [Simulate without signing prompts](/developers/testnet/docs/aztec-js/how_to_simulate_without_signing.md): How to call .simulate() on a view function or estimate gas without prompting the user to sign authentication witnesses. - [Testing Smart Contracts](/developers/testnet/docs/aztec-js/how_to_test.md): Learn how to write and run tests for your Aztec smart contracts using Aztec.js and a local network. - [Using Authentication Witnesses](/developers/testnet/docs/aztec-js/how_to_use_authwit.md): Step-by-step guide to implementing authentication witnesses in Aztec.js for delegated transactions. - [Pay Fees Privately](/developers/testnet/docs/aztec-js/how_to_use_private_fee_juice.md): Learn how private fee payment works on Aztec and walk through an example using a community-built fully private Fee Payment Contract. - [TypeScript API Reference](/developers/testnet/docs/aztec-js/typescript_api_reference.md): API reference documentation for Aztec TypeScript packages including aztec.js, accounts, PXE, and core libraries. - [Overview](/developers/testnet/docs/aztec-nr.md): Comprehensive guide to writing smart contracts for the Aztec network using Noir. - [Aztec.nr API Reference](/developers/testnet/docs/aztec-nr/api.md): Auto-generated API reference documentation for the Aztec.nr smart contract framework. - [Compiling Contracts](/developers/testnet/docs/aztec-nr/compiling_contracts.md): Compile your Aztec smart contracts into deployable artifacts using aztec command. - [Contract Deployment Reference](/developers/testnet/docs/aztec-nr/contract_readiness_states.md): A practical guide to determine which deployment steps your Aztec contract needs and when functions become callable. - [Debugging Aztec Code](/developers/testnet/docs/aztec-nr/debugging.md): This guide shows you how to debug issues in your Aztec contracts. - [Profiling Transactio […gekürzt]